The AE400H9904 from Anatech Electronics is a RF High Pass Filter with Frequency 400 to 800 MHz, Insertion Loss 1 dB, Power 10 W, Rejection 80 dB@DC-250 MHz, Operating_Temperature -20 to 70 Degree C. Tags: Module with Connectors, Lumped Component Filter. More details for AE400H9904 can be seen below.